ISO 18642:2016规定了关于肥料级尿素的试验方法、取样和制备、标记和标签、包装、运输和储存的一般要求。 它适用于固体形式的尿素，例如粒状、粒状或糊状，由氨与二氧化碳反应制成。尿素可按其预期用途、工业用途和/或农业用途进行分类。它主要用作农业领域的肥料。它仅适用于农业领域的肥料级尿素。

ISO 18642:2016 specifies the general requirements regarding testing methods, sampling and preparation of test sample, marking and labelling, package, transport, and storage of fertilizer grade urea. It is applicable to urea in solid form, e.g. granular, prilled, or pastilled, which is made by the reaction of ammonia with carbon dioxide. Urea can be classified by its intended use, industrial and/or agricultural. It is mainly used as fertilizer in the field of agriculture. It is only applicable to fertilizer grade urea in the field of agriculture.